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(No Model.)

BfE, H ENRIKS EN. BRIDGE FOR FIRE 11033,

Patented-Mar. 27, 1888.

I n W. 11. E:

UNITED STATES;

PATENT OFFIC I BERNHARDT E. HENRIKSEN, OF SAN FRANCISCO, CALIFORNIA.

BRIDGE FOR FIRE-HOSE.

SPECIFICATION forming part of Letters Patent No. 380,036, dated March2'7, 1888. Application filcd January 7, 18 88. Serial No. 260,085. (Nomodel.)

To all whom it may concern.-

Be it known that I, BERNHARDT E. HEN

RIKSEN, of the city and county of San Francisco, State of California,have invented an Improvement in a Bridge for Fire Hose; and

i I hereby declare the following mm a full, clear,

over any number of tracks or width of street,

the construction beingsuch that several lengths of hose may be carriedover a single bridge.

Referring to the accompanying drawings for a more complete explanationof my invention, Figure 1 is a side elevation of one section. Fig. 2 isan end elevation of one of the yokes. Figs. 3 and 4 are enlarged viewsof the two yokes. Fig. 5 is a side elevation of the yokes of twoconnecting sectionswhen jointed together.

In the construction of my bridge I employ yokes A and B, which are inthe present case shown as semicircular in form, and these yokes haveholes made through the upper ends, andalso through the'lower centralportion of the curve, as shown in Fig. 2, so that rods 0 may passthrough these holes, being suitably secured, so as to form a cradle ofany desired length. I prefer that the rods 0 be made tubular in form forlightness and strength, and as many yokes D maybe employed between thetwo end yokes, A and B, as are necessary to give the proper strength andstiffness to the structure. The end yokes, A and B, have inclined facesformed upon the outer sides near the upper ends, as shown at E, andscrewthreaded bolts G extend outwardly from these faces and at rightangles with them. Legs H, which are preferably made tubular forlightness, have heads I formed at their upper ends, with holes throughthem to fit'over the bolts G, and the faces which come in contact withthe faces E may be corrugated or roughened,

or otherwise so formed that they maybe firmly locked by means of theclamping-nuts F, which turn upon the screw-bolts G. The legs will thusbe held in place so that they cannot turn or move. These legs havetelescopic sections or extensions J, which slide in or out of theirlower ends, and which are held at any desired point by holding-screws K.When the legs are secured to the yokes, as shown in Figs. 1 and 2, theycross each other, and theymay be united below the point of crossing by achain, L, which will prevent their slipping or sp reading underconsiderable weight.

In order to unite the ends of two sections together, each of thesections has a short bolt on pin, M, projecting so as to fit intocorresponding openings in the adjacent yokes.

Upon the top of one of the adjacent yokes are I the upwardly-projectinglugs or hooks N, and upon the upper sides of the other adjacent yoke arethe hinged latches 0, having slots formed in them, so that they may,when turned down, hook through the lugs N, and thus unite the upper endsof the yokes firmly together. In the center and lower portion of theadjacent yokes are similar hooks and latches, P and-Q, bywhich thisportion is secured. By this construction it will be seen that as manysections of the cradle may be firmly united together as may be desiredto carry the hosea considerable distance. If there is any unevenness orirregularity in the surface of the'ground, or r if it be desired toraise or lower the sections for any purpose, it is done by means of theadj ustable'leg-seotions J. When not in use, these sections areseparated, the legs H being turned up to fold alongside of the cradle,and

one or more of the sections may be carried upon the hook-and-laddertruck or other vehicles of the fire department, or upon cars, the wholedevice being light and occupying but little space.

Should a fire occur and it become necessary to use one or more linesofhose acrossastreet or line of railroad-tracks, one or more of thesesections are taken from the trucks or cars and laid across the tracks orroadway an d clamped together. As many lines of hose as it may bedesired to use are next placed in the semicir-' ICO cular cradle or tubethus formed, and the 7 bridge is raised to the required height by meansof the legs, which are then firmly secured by the clamp-nuts F, so thatthe structure cannot fall. When two or more sections are required, theyokes A of one section and B of the next adjacent section are united bythe hooks and latches above described until as great a length of thestructure has been erected as may be needed. In cases of necessityadditionallines of hose can be readily placed upon the bridge alreadyset up byvmeans of suitable poles having forked or concave ends providedfor that purpose. In some cases T or angle bars or other forms ofconnecting-rods may be used between the yokes; but I have found thehollow tubes to be the lightest and most rigid construction.

Having thus described myinvention, what I claim as new, and desire tosecure by Letters Patent, is

1. A portable extension-bridge for fire-hose, composed of independentconcave yokes having the ends constructed with lugs orconnecting-latches, substantially as herein described.

2. The bridge or cradle sections composed of semicircular yokes havingrods or tubes extending through them, so as to form concave bridges, incombination with legs pivoted to opposite sides of the end sections, soas to cross each other, and having the bolts and looking or clampingnuts by which they are secured to the yokes, substantially as hereindescribed.

3. The concave yokes with the uniting rods or tubes extending throughthem, so as to form cradle-sections, the legs (having corrugated orroughened heads, which are secured upon corresponding inclined facesupon opposite sides of the end yokes of the sections, and the telescopicextensions of said legs, with the holding or clamping screws,substantially as herein described.

4. The concave yokes with the rods or tubes extending through them, soas to form bridge or cradle sections, and the adjustable supporting-legswith the clamping-nuts, in combination with the latches and the lugs orhooks upon adjacent meeting sections, whereby they may be unitedtogether to form an extensionbridge, substantially as herein described.

5. The concave yokes with the uniting rods or bars, the adjustablesupporting-legs, and the lugs and latches by which adjacent meeting endsof the sections are united together, in combination with the projectingpins or bolts M, whereby the tubular bars are united and made continuousfrom one section to the other, substantially as herein described.

In witness whereof I have hereunto set my hand.

BERNHARDT E. HENRIKSEN.

\Vitnesses:

S. H. NoURsE, H. 0. LEE.

